Heating device for permanent waves



Aug. 2, 1938. c. P. SIMAS HEATING DEVICE FOR PERMANENT WAVES Filed April17, 1937 WW d. (1% affforfigy Patented Aug. 2, 1938 UNITED STATES PATENTOFFICE- HEATING DEVICE FOR PERMANENT WAVES Charles P. Simas, Taunton,Mass. Application April 17, 1937, Serial No. 137,457

3 Claims.

This invention relates to a permanent wave electric heating device.

One object of my invention is to provide a permanent wave electricheating device that is lighter in weight than those in common use,

being so light that the combined weight of all of my devices needed togive the hair of one person a permanent wave, is not uncomfortablynoticeable, as the heating devices now in general use are.

Another object is to so construct construct my device of used again andagain. Still another object is to a new combination of materials that isparticularly efficient as an electrical heater for permanent wave curls.A further object is to provide such parts for my device and so assemblethem that its production cost is low, and, therefore, requires littlecapital for the hair dresser or barber to equip himself with them.

it susceptible to various changes and modifications, and, therefore, Iam not to be limited to said disclosure; but am entitled to all suchchanges therefrom as fall within the scope of my claims.

In the drawing:

Figure 1 is a perspective view of my heating device disassembledsufficiently to illustrate the various parts forming it.

Figure 2 is a fragmentary view of the heating element for my device.

Figure 3 is a front elevational view of my heating device in use,showing it folded around a tress of hair on a curler.

Figure 4 is a fragmentary view showing the Figure 5 is a sectionalmanner of assembly at one end of my device.

view through my heating device in folded position; but without the metalfoil around it.

As illustrated, an electrical heating element I2 is preferably formed ofa thin, flat piece of nected to each other.

At the outside end of each slit |3 between the two adjacent sections I42. larger space I5 is formed, preferably, by cutting away a portion ofsaid sections M at their outside ends, so that said sections aredefinitely spaced apart at their extreme ends. Said heating element |2has an extending tab [6, preferably integral therewith, through whichthe electrical current enters, by making a suitable connectiontherewith, to thereby heat my device. A securing fastener I'I holds saidtab I6 firmly in position by extending through it and a spacer l8. Thisspacer I8 is preferably made of thin sheet asbestos and extendssubstantially the length of said heating element |2, passing throughsaid slits l3 in back of one said section l4 and in front of the nextsaid section, and so on, as illustrated in Figure l of the drawing. Thisarrangement provides the heating means for my device, and is superior tothe commonly used electrical resistance members.

A sheet of asbestos 20 or other non-inflammable material, which ispreferably folded to form three folds 2| is wrapped around said heatingelement l2 and spacer I8, two of said folds 2| being on one side of saidheating element and one said fold 2| being on the other, as illustratedin Figure 5 of the drawing. Outside of said sheet of asbestos 20 is asheet of thin, flexible metal foil 23 which serves as an electrodethrough which the electrical current passes, the

metal curling rod 28 on which a curl 29 is formed,

there being a piece of protective paper 30 such as sheet asbestosbetween my device and said curl 29 to eliminate the possibility ofscorching the curl. The electrical circuit is established and theelectricity supplied to said heating element l2 through positive andnegative connections 3| and 32 respectively, as shown in said Figure 3.

It will thus be seen that my heating device, which is substantially flatwhen its parts are assembled, is flexible, and can readily andrepeatedly be folded around the curl formed on a hair curler, and justas readily unfolded when the curl has set, regardless of the shape ofsaid curl or curler.

While I have enumerated the use of certain materials such as asbestos,which is non-inflammable, and metal foil, which is an electricalconductor, there may be substituted for them other materials having thedesired qualities without departing from the principles of the inventionand without sacrificing its chief advantages.

What I claim is:

1. A heating device for curls comprising a heating element in the formof a fiat piece of metal embodying, a plurality of sections ,connectedtogether, a spacer between said sections, a sheet of asbestos around aportion of said heat-,

the other said fold being on the other side of said piece of metal,metal foil around a portion of said asbestos sheet, a portion of saidmetal foil being in contact with said flat piece of metal.

2. A heating device for curls comprising a fiat,

merit and one of said folds on the other, a sheet of metal foilextending around a portion of said asbestos sheet and spaced from saidtab, a portion of said metal foil being in contact with said heatingelement, one end of said metal foil being folded over onto said asbestossheet, the whole being flexible and adapted to be folded.

3. A heating device for curls comprising a flat metal heating elementhaving a plurality of slits therein dividing said heating element intosections connected together} each said isl it being closed at one sideand open at theo'pp'o'site side,

th e opening at said opposite side being larger ing element embodyingthree folds, two of said folds being on one side of said piece'ofmetaland than the remainder of said slit, an asbestos spacer extendingthrough said slits, and spaced from the outer sides thereof, passingfrom the front of said heating element through a said slit to the backof said heating element, said heating element embodying a tab extendingoutwardly beyond said sections, an asbestos sheet extending around aportion oi said heating element embodying three folds, two of saidfoldsbeing on one side of said heating element, and one oi said folds onthe other, a sheet of metal foil extending around a portion of saidasbestos sheet and spaced from said tab, a portion ,of said metal foilbeing in contact with said heating element, one end of said metal foilbeing folded over onto said asbestos sheet, the whole being flexible andadapted to be folded.

CHARLES P. SIMAS.

